Method for splitting collar or sleeve

ABSTRACT

Disclosed is a method for splitting a collar or a sleeve. Using nylon as a connecting thread guarantees the strength requirement of the connecting thread in a production process of a to-be-split semi-finished product and can dissolve the nylon via a splitting agent to split the collar or the sleeve. In the splitting agent, formic acid can dissolve the nylon and has no adverse effect to the collar and the sleeve; and a fog inhibitor can inhibit volatilization of the formic acid, so that the formic acid is acted on the nylon more effectively thus improving the utilization rate of the formic acid. The splitting agent is employed to directly act on a connecting thread of the collar or the sleeve, thus operation is convenient; and the connecting thread can be dissolved provided that the splitting agent contacts it for 1-2 s, thus splitting efficiency is high.

The present application claims priority to the Chinese Patent Application No. CN201811139117.2, filed with the Chinese Patent Office on Sep. 28, 2018, and entitled “METHOD FOR SPLITTING COLLAR OR SLEEVE”, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present invention relates to the technical field of clothes preparation, and in particular to a method for splitting a collar or a sleeve.

BACKGROUND

At present, a collar/sleeve of knitwear is made of cotton, polyester or polyester-cotton blend mostly. In a production process, in order to facilitate continuous production, multiple collars/sleeves are connected via a strong polyester yarn. After the collars/sleeves are knitted, a series of dyeing and clearing-up procedures need to be carried out; and then, an obtained semi-finished product is split. Among them, one procedure is a collar/sleeve splitting procedure. A traditional method is to split the collars/sleeves manually. For example, for collar splitting work, it is a main practice to carry out manual collar pavement (or referred to as scutching) to pave the collars into a stack body having a certain length and a certain number of layers, and then draw a thread manually to remove the strong polyester yarn between the collars. In the thread drawing, a worker needs to move back and forth, and has an arm swung repeatedly and continuously, so that the labor capacity is large, both the time and the labor are consumed, and the collar splitting efficiency is low. A Chinese patent having publication No. CN105380327A discloses an automatic collar splitter to simulate manual thread drawing. Although the labor intensity is reduced, the production efficiency is improved to some extent. Nonetheless, the machine operation is complex and the efficiency still needs to be further improved.

SUMMARY

An objective of the present invention is to provide a method for splitting a collar or a sleeve. The method provided by the present invention has simple operation and high splitting efficiency.

In order to achieve the foregoing inventive objective, the present invention provides the following technical solution:

The present invention provides a method for splitting a collar, which includes the following steps:

providing a to-be-split semi-finished product, where the to-be-split semi-finished product includes a to-be-split semi-finished collar or a to-be-split semi-finished sleeve, a connecting thread of the collar in the to-be-split semi-finished collar is made of nylon, a connecting thread of a sleeve in the to-be-split semi-finished sleeve is made of the nylon, and materials of the collar and the sleeve independently include cotton, polyester or polyester-cotton blend;

providing a splitting agent, where the splitting agent includes formic acid and a fog inhibitor; and

contacting the splitting agent with a connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product.

Preferably, a mass ratio of the formic acid to the fog inhibitor in the splitting agent is (97-99):(1-3).

Preferably, the fog inhibitor includes fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate or 1,4-butynediol.

Preferably, the nylon includes nylon 6 or nylon 66.

Preferably, a method for preparing the to-be-split semi-finished product includes the following steps:

using nylon as a connecting thread to produce a collar or a sleeve, and then carrying out dyeing and clearing-up sequentially to obtain the to-be-split semi-finished product.

Preferably, the contacting method includes: spraying the splitting agent onto the connecting thread of the to-be-split semi-finished product, or impregnating the connecting thread of the to-be-split semi-finished product into the splitting agent.

Preferably, the contacting is carried out at a room temperature.

Preferably, after the contacting, the method further includes drying, where the drying temperature is 100-110° C. and the time is 2-4 min.

The present invention provides a method for splitting a collar, which includes the following steps: providing a to-be-split semi-finished product, where the to-be-split semi-finished product includes a to-be-split semi-finished collar or a to-be-split semi-finished sleeve, a connecting thread of the collar in the to-be-split semi-finished collar is made of nylon, a connecting thread of a sleeve in the to-be-split semi-finished sleeve is made of the nylon, and materials of the collar and the sleeve independently include cotton, polyester or polyester-cotton blend; providing a splitting agent, where the splitting agent includes formic acid and a fog inhibitor; and contacting the splitting agent with a connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product. By using the nylon as the connecting thread, the present invention not only can guarantee the requirement on the strength of the connecting thread in a production process of the to-be-split semi-finished product, but also can dissolve the nylon via the splitting agent to split the collar or the sleeve. In the splitting agent, as an effective component, the formic acid can dissolve the nylon, and also has no adverse effect to the collar and the sleeve; and the fog inhibitor can inhibit volatilization of the formic acid, so that the formic acid is acted on the nylon more effectively and the utilization rate of the formic acid is improved. The present invention employs the splitting agent to directly act on the connecting thread of the collar or the sleeve, so the operation is convenient; and the connecting thread can be dissolved provided that the splitting agent contacts with the connecting thread for 1-2 s, so the splitting efficiency is high.

DETAILED DESCRIPTION

The present invention provides a method for splitting a collar, which includes the following steps:

Provide a to-be-split semi-finished product, where the to-be-split semi-finished product includes a to-be-split semi-finished collar or a to-be-split semi-finished sleeve, a connecting thread of the collar in the to-be-split semi-finished collar is made of nylon, a connecting thread of a sleeve in the to-be-split semi-finished sleeve is made of the nylon, and materials of the collar and the sleeve independently include cotton, polyester or polyester-cotton blend.

Provide a splitting agent, where the splitting agent includes formic acid and a fog inhibitor.

Contact the splitting agent with a connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product.

According to the present invention, a to-be-split semi-finished product is provided, where the to-be-split semi-finished product includes a to-be-split semi-finished collar or a to-be-split semi-finished sleeve, a connecting thread of the collar in the to-be-split semi-finished collar is made of nylon, a connecting thread of a sleeve in the to-be-split semi-finished sleeve is made of the nylon, and materials of the collar and the sleeve independently include cotton, polyester or polyester-cotton blend. In the present invention, the nylon includes nylon 6 or nylon 66 preferably. The cotton, the polyester or the polyester-cotton blend are not specially defined by the present invention and may use cotton, polyester or polyester-cotton blend known to a person skilled in the art. In the present invention, the collar or the sleeve is a collar or a sleeve of knitwear preferably.

A method for preparing the to-be-split semi-finished product is not specially defined by the present invention, and the to-be-split semi-finished product may be prepared with a method known to the person skilled in the art. In the present invention, the method for preparing the to-be-split semi-finished product preferably includes the following steps: use nylon as a connecting thread to produce a collar or a sleeve, and then carry out dyeing and clearing-up sequentially to obtain the to-be-split semi-finished product. A specific operation manner for using the nylon as the connecting thread to produce the collar or the sleeve and a specific operation manner for the dyeing and the clearing-up are not specially defined by the present invention, and may use a manner known to the person skilled in the art.

By using the nylon as the connecting thread, the present invention can guarantee the requirement on the strength of the connecting thread in the dyeing and clearing-up process so that the connected collar or sleeve is not disconnected in the dyeing and clearing-up process, and can also guarantee to subsequently employ the splitting agent to dissolve the nylon to split the collar or the sleeve.

The splitting agent is provided by the present invention, where the splitting agent includes formic acid and a fog inhibitor. In the present invention, a mass ratio of the formic acid to the fog inhibitor in the splitting agent is preferably (97-99):(1-3), and more preferably 97:3, 98:2 or 99:1. In the present invention, the fog inhibitor includes fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate or 1,4-butynediol preferably, and more preferably the 1,4-butynediol.

A method for preparing the splitting agent is not specially defined by the present invention, and the splitting agent may be prepared by mixing the formic acid with the fog inhibitor and stirring uniformly. The stirring rate is not specially defined by the present invention, and may use a stirring rate known to the person skilled in the art provided that the uniform mixing of materials are guaranteed.

The present invention uses a splitting agent to split a collar or a sleeve. In the splitting agent, as an effective component, formic acid can dissolve nylon, and also has no adverse effect to the collar, the sleeve and a dye; and a fog inhibitor can inhibit volatilization of the formic acid, so that the formic acid is acted on the nylon more effectively and the utilization rate of the formic acid is improved.

After a to-be-split semi-finished product and the splitting agent are obtained, the present invention contacts the splitting agent with a connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product. In the present invention, the contacting is carried out at a room temperature preferably, i.e., additional heating or cooling turns out to be unnecessary. In the present invention, the contacting method preferably includes: spray the splitting agent onto the connecting thread of the to-be-split semi-finished product, or impregnate the connecting thread of the to-be-split semi-finished product into the splitting agent. Specific operations of the spraying and the impregnating are not specially defined in the present invention, provided that the contact between the splitting agent and the connecting thread of the to-be-split semi-finished product can be implemented, and the connecting thread is guaranteed to be dissolved to split the collar or the sleeve.

The present invention employs the splitting agent to directly act on the connecting thread of the collar or the sleeve, so the operation is convenient; and the connecting thread can be dissolved provided that the splitting agent contacts with the connecting thread for 1-2 s, so the splitting efficiency is high.

Upon the completion of the contacting, the present invention dries the obtained collar or sleeve preferably. In the present invention, the drying temperature is preferably 100-110° C. and more preferably 105° C.; and the time is preferably 2-4 min, and more preferably 3 min

The present invention uses the splitting agent to directly act on the connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product. In an actual production process, a small amount of the splitting agent may remain in a part of the collar or the sleeve, and the present invention removes the remained small amount of the splitting agent by drying, so an additional complex operation turns out to be unnecessary, and the method is simple and convenient.

Upon the completion of the drying, the present invention sorts and packages the dried collar or sleeve preferably to obtain a collar or sleeve finished product.

The technical solution of the present invention is described below clearly and completely in combination with embodiments of the present invention. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

Embodiment 1

In parts by weight, 98 parts of formic acid and 2 parts of 1,4-butynediol were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 6 was used as a connecting thread to produce a collar (the material was cotton), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The splitting agent was sprayed onto the connecting thread of the to-be-split semi-finished product at a room temperature, so that the connecting thread was dissolved to split the collar.

The split collar was dried for 3 min at 105° C., and then was sorted and packaged to obtain a collar finished product.

Embodiment 2

In parts by weight, 97 parts of formic acid and 3 parts of fatty alcohol-polyoxyethylene ether were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 66 was used as a connecting thread to produce a collar (the material was polyester), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The connecting thread of the to-be-split semi-finished product was impregnated into the splitting agent at a room temperature, so that the connecting thread was dissolved to split the collar.

The split collar was dried for 4 min at 100° C., and then was sorted and packaged to obtain a collar finished product.

Embodiment 3

In parts by weight, 99 parts of formic acid and 1 part of sodium dodecyl sulfate were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 6 was used as a connecting thread to produce a collar (the material was polyester cotton blend), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The connecting thread of the to-be-split semi-finished product was impregnated into the splitting agent at a room temperature, so that the connecting thread was dissolved to split the collar.

The split collar was dried for 2 min at 110° C., and then was sorted and packaged to obtain a collar finished product.

Embodiment 4

In parts by weight, 97 parts of formic acid and 3 parts of 1,4-butynediol were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 66 was used as a connecting thread to produce a sleeve (the material was polyester cotton blend), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The splitting agent was sprayed onto the connecting thread of the to-be-split semi-finished product at a room temperature, so that the connecting thread was dissolved to split the sleeve.

The split sleeve was dried for 3 min at 105° C., and then was sorted and packaged to obtain a sleeve finished product.

Embodiment 5

In parts by weight, 99 parts of formic acid and 1 part of fatty alcohol-polyoxyethylene ether were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 6 was used as a connecting thread to produce a sleeve (the material was cotton), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The connecting thread of the to-be-split semi-finished product was impregnated into the splitting agent at a room temperature, so that the connecting thread was dissolved to split the sleeve.

The split sleeve was dried for 4 min at 100° C., and then was sorted and packaged to obtain a sleeve finished product.

Embodiment 6

In parts by weight, 98 parts of formic acid and 2 parts of sodium dodecyl sulfate were weighed, and were stirred to mix uniformly to obtain a splitting agent.

Nylon 66 was used as a connecting thread to produce a sleeve (the material was polyester), and then dyeing and clearing-up were carried out sequentially to obtain a to-be-split semi-finished product.

The connecting thread of the to-be-split semi-finished product was impregnated into the splitting agent at a room temperature, so that the connecting thread was dissolved to split the sleeve.

The split sleeve was dried for 2 min at 110° C., and then was sorted and packaged to obtain a sleeve finished product.

The foregoing descriptions are only preferred implementation manners of the present invention. It should be noted that for a person of ordinary skill in the art, several improvements and modifications may further be made without departing from the principle of the present invention. These improvements and modifications should also be deemed as falling within the protection scope of the present invention.

The above description of the embodiment is only for helping to understand the method of the present invention and its core idea. It should be noted that, several improvements and modifications may be made by persons of ordinary skill in the art without departing from the principle of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention. Various modifications to these embodiments are readily apparent to persons skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not limited to the embodiments shown herein but falls within the widest scope consistent with the principles and novel features disclosed herein. 

1. A method for splitting a collar or a sleeve, comprising the following steps: providing a to-be-split semi-finished product, wherein the to-be-split semi-finished product comprises a to-be-split semi-finished collar or a to-be-split semi-finished sleeve, a connecting thread of the collar in the to-be-split semi-finished collar is made of nylon, a connecting thread of a sleeve in the to-be-split semi-finished sleeve is made of the nylon, and materials of the collar and the sleeve independently comprise cotton, polyester or polyester-cotton blend; providing a splitting agent, wherein the splitting agent comprises formic acid and a fog inhibitor; and contacting the splitting agent with a connecting thread of the to-be-split semi-finished product to split the collar or the sleeve in the to-be-split semi-finished product.
 2. The method according to claim 1, wherein a mass ratio of the formic acid to the fog inhibitor in the splitting agent is (97-99):(1-3).
 3. The method according to claim 1, wherein the fog inhibitor comprises fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate or 1,4-butynediol.
 4. The method according to claim 1, wherein the nylon comprises nylon 6 or nylon
 66. 5. The method according to claim 1, wherein a method for preparing the to-be-split semi-finished product comprises the following steps: using nylon as a connecting thread to produce a collar or a sleeve, and then carrying out dyeing and clearing-up sequentially to obtain the to-be-split semi-finished product.
 6. The method according to claim 1, wherein the contacting method comprises: spraying the splitting agent onto the connecting thread of the to-be-split semi-finished product, or impregnating the connecting thread of the to-be-split semi-finished product into the splitting agent.
 7. The method according to claim 1, wherein the contacting is carried out at a room temperature.
 8. The method according to claim 1, after the contacting, further comprising drying, wherein the drying temperature is 100-110° C. and the time is 2-4 min.
 9. The method according to claim 2, wherein the fog inhibitor comprises fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate or 1,4-butynediol.
 10. The method according to claim 4, wherein a method for preparing the to-be-split semi-finished product comprises the following steps: using nylon as a connecting thread to produce a collar or a sleeve, and then carrying out dyeing and clearing-up sequentially to obtain the to-be-split semi-finished product.
 11. The method according to claim 6, wherein the contacting is carried out at a room temperature.
 12. The method according to claim 6, after the contacting, further comprising drying, wherein the drying temperature is 100-110° C. and the time is 2-4 min. 